What element of a database system is represented by the question mark in the above diagram?
A、Database administrator
B、Electronic point of sale system
C、Data storage
D、Database management system
A、Database administrator
B、Electronic point of sale system
C、Data storage
D、Database management system
【参考答案及解析】
Rationale: The DBMS is the software that builds, manages and provides access to a database.Data storage is carried out in the database itself. The database administrator is a person (not a part of the system) who controls the system. EPOS is a form of data collection and input.
Rationale: The DBMS is the software that builds, manages and provides access to a database.Data storage is carried out in the database itself. The database administrator is a person (not a part of the system) who controls the system. EPOS is a form of data collection and input.